Demand for the newest edition of Billboard magazine (Oct. 2, 2010 edition) with POISON singer Bret Michaels on the cover and a feature article on Bret called "Maximum Exposure" has been so overwhelming that Billboard has decided to print and offer more copies for sale.To order your copy now, click here. According to The Pulse of Radio, Bret Michaels' health woes are not over yet. The rocker/reality star will undergo heart surgery in January to repair a hole in his heart — a condition he's had since birth, but only recently discovered. His rep said, "Is he 100 percent? No, but he's in good spirits, he's having fun on the road, he loves his fans and has always said music heals him. He said that there are times when, of course, he worries but he has great people around him and he's very cautious." The hole was discovered after Michaels suffered a stroke several months ago — which came on the heels of a brain hemorrhage. He's since made a remarkable recovery and returned to touring. His rep added, "Maybe sometimes he gets a little tired easier and on occasion he'll get a headache, but that's when he knows it's time to rest. He'll rest up, have surgery, take some time off, hopefully take a family vacation and get back on the road touring and promoting his upcoming book."